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Finding the Fourth Proportional to 56.73, 84.66 and 54.69

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Solution

The fourth proportional to 56.73, 84.66 and 54.69 is: 81.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.73 : 84.66 = 54.69 : x
  2. Step 2: Convert to fraction form
    56.73/84.66 = 54.69/x
  3. Step 3: Cross multiply
    56.73x = 84.66 × 54.69
  4. Step 4: Simplify right side
    56.73x = 4,630.32
  5. Step 5: Solve for x
    x = 4,630.32/56.73
  6. Step 6: Final answer
    x = 81.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.